File: nil-receiver-undefined-larger-than-voidptr-ret-region.m

package info (click to toggle)
llvm-toolchain-4.0 1%3A4.0.1-10~deb9u2
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 493,332 kB
  • sloc: cpp: 2,698,100; ansic: 552,773; asm: 128,821; python: 121,589; objc: 105,054; sh: 21,174; lisp: 6,758; ml: 5,532; perl: 5,311; pascal: 5,245; makefile: 2,083; cs: 1,868; xml: 686; php: 212; csh: 117
file content (32 lines) | stat: -rw-r--r-- 616 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
// RUN: %clang_cc1 -triple i386-apple-darwin8 -analyze -analyzer-checker=core,alpha.core -analyzer-store=region -verify -Wno-objc-root-class %s

// <rdar://problem/6888289> - This test case shows that a nil instance
// variable can possibly be initialized by a method.
@interface RDar6888289
{
  id *x;
}
- (void) test:(id) y;
- (void) test2:(id) y;
- (void) invalidate;
@end

id *getVal(void);

@implementation RDar6888289
- (void) test:(id)y {
  if (!x)
    [self invalidate];
  *x = y;
}
- (void) test2:(id)y {
  if (!x) {}
  *x = y; // expected-warning {{null}}
}

- (void) invalidate {
  x = getVal();
}

@end